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Category 4 Sunglasses for Climbing

Retainer Strap

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UK brand Rapid Eyewear have been manufacturing their range of specialised sunglasses for many years. Based on the ever-popular Nimbus wrap-around sports frame, 'Nimbus Dark' adds a lens which is the darkest tint available using the internationally recognised categorisation system. A category 4 lens is perfect for use in extreme sun conditions, including at altitude.

The Frames

Made from a robust yet lightweight TR90 composite, the frame is finished in an attractive matt black colour. It features sprung side arms and rubber side arm extensions for an ultra comfortable fit. The Nimbus frame is designed to fit most adults; a slight built-in flex means the frame will 'mould' itself to your head comfortably. The wrap-around sports shape prevents light intrusion from the sides of your vision, whilst helping to prevent wind and snow etc. from entering your eyes.

The Lenses

Nimbus have lenses cut from an impact-resistant polycarbonate material. Each lens is decentred, to calibrate the field of view such that the slight curvature does not distort your vision. The category 4 filter allows less than 10% of the visible light spectrum (VLT) pass through it, making this product perfect for use at high altitudes.

Very dark category 4 sunglasses for sports

Pouch & Accessories

A microfibre pouch is supplied, that doubles as a cleaning cloth. if you would like a retainer strap, please select this option from the menu at the top of this page before completing your purchase. A wide range of additional lenses are available for this frame - to view these, please click here.

Conformity and Legal

Nimbus sunglasses comply with all current British, European and US standards. They offer 100% UV protection. 

Important Note: Driving
Please note that category 4 sunglasses are NOT suitable for driving, cycling, motorbiking or any other road use. They are designated as dangerous for use on the road according to all major international standards. We cannot be responsible for any loss or injury resulting from the use of these sunglasses for any of the activities listed above.

Category 4 sunglasses allow less than 10% of the visible spectrum through the lenses and into your eyes. Most car windscreens are tinted, and this reduces the amount of visible light even further. Please do not put yourself or others in danger by ignoring this warning.

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